194481943 has 2 divisors, whose sum is σ = 194481944. Its totient is φ = 194481942.

The previous prime is 194481907. The next prime is 194481949. The reversal of 194481943 is 349184491.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 194481943 - 2⁹ = 194481431 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 194481943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194481949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97240971 + 97240972.

It is an arithmetic number, because the mean of its divisors is an integer number (97240972).

Almost surely, 2^194481943 is an apocalyptic number.

194481943 is a deficient number, since it is larger than the sum of its proper divisors (1).

194481943 is an equidigital number, since it uses as much as digits as its factorization.

194481943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 43.

The square root of 194481943 is about 13945.6782911410. The cubic root of 194481943 is about 579.3750134621.

The spelling of 194481943 in words is "one hundred ninety-four million, four hundred eighty-one thousand, nine hundred forty-three".